<template>
    <div>
        <el-form :inline="true" :model="stuSearchForm" class="demo-form-inline">
            <el-form-item label="学生编号">
                <el-input v-model="stuSearchForm.sid" placeholder="学生编号"></el-input>
            </el-form-item>
            <el-form-item label="学生编号">
                <el-input v-model="stuSearchForm.sname" placeholder="学生姓名"></el-input>
            </el-form-item>
            <el-form-item label="学生编号">
                <el-input v-model="stuSearchForm.age" placeholder="学生年龄"></el-input>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" @click="initTable">查询</el-button>
                <el-button type="danger" @click="batchDelete">批量删除</el-button>
                <el-button type="primary" @click="Add">添加</el-button>
            </el-form-item>
        </el-form>
        <el-table
                :data="tableData"
                border
                @selection-change="handleSelectionChange"
                style="width: 100%">
            <el-table-column
                    type="selection"
                    width="55">
            </el-table-column>
            <el-table-column
                    prop="sid"
                    label="学生编号">
            </el-table-column>
            <el-table-column
                    prop="sname"
                    label="姓名">
            </el-table-column>
            <el-table-column
                    prop="age"
                    label="年龄">
            </el-table-column>
            <el-table-column
                    prop="aaa.cname"
                    label="班级名称">
            </el-table-column>
            <el-table-column
                    fixed="right"
                    label="操作">
                <template slot-scope="scope">
                    <el-button type="success" icon="el-icon-edit" @click="Student(scope.row)">修改</el-button>
                    <el-button type="danger" icon="el-icon-delete" @click="del(scope.row)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>
        <!--
            @size-change:
             @current-change:
             page-sizes:[]
             :current-page=当前页码
             :page-size默认每页显示的条数
             :total 总条数
        -->
        <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="currentPage"
                :page-sizes="[5, 10, 15, 20]"
                :page-size="5"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
        </el-pagination>

        <!--编辑对话框-->
        <el-dialog
                title="修改员工"
                :visible.sync="dialogVisible"
                width="30%">
            <el-form ref="form" :model="studentForm" label-width="80px" >
                <el-form-item label="学生编号">
                    <el-input v-model="studentForm.sid"></el-input>
                </el-form-item>
                <el-form-item label="学生名字">
                    <el-input v-model="studentForm.sname"></el-input>
                </el-form-item>
                <el-form-item label="学生年龄">
                    <el-input v-model="studentForm.age"></el-input>
                </el-form-item>
                <el-form-item label="班级编号">
                    <el-input v-model="studentForm.cid"></el-input>
                </el-form-item>
                <el-form-item label="班级名称">
                    <el-select v-model="studentForm.cid" placeholder="请选择">
                        <el-option
                                v-for="item in classes"
                                :key="item.cid"
                                :label="item.cname"
                                :value="item.cid">
                        </el-option>
                    </el-select>
                </el-form-item>
                <el-form-item size="large">
                    <el-button type="primary" @click="updateStudent">确认修改</el-button>
                    <el-button @click="dialogVisible=false">取消</el-button>
                </el-form-item>
            </el-form>
        </el-dialog>

        <el-dialog
                title="添加学生"
                :visible.sync="dialogVisibles"
                width="30%">
            <el-form ref="form" :model="studentForm" label-width="80px" >
                <el-form-item label="学生名字">
                    <el-input v-model="studentForm.sname"></el-input>
                </el-form-item>
                <el-form-item label="学生年龄">
                    <el-input v-model="studentForm.age"></el-input>
                </el-form-item>
                <el-form-item label="班级编号">
                    <el-input v-model="studentForm.cid"></el-input>
                </el-form-item>
                <el-form-item size="large">
                    <el-button type="primary" @click="addStudent">确认添加</el-button>
                    <el-button @click="dialogVisibles=false">取消</el-button>
                </el-form-item>
            </el-form>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        data(){
            return{
                dialogVisibles:false,
                //编辑对话框的显示和隐藏
                dialogVisible:false,
                /*搜索*/
                stuSearchForm:{},
                //编辑表单对象
                studentForm:{},
                tableData: [],
                currentPage:1,
                pageSize:5,
                total:0,
                //所有班级
                classes:[],
                //表格的选中项
                multipleSelection:[],
                //声明被选中的id
                /*ids:[],*/
                //增加
                //students:{}
            }
        },
        created() {
                this.initTable(),
                //查询所有部门
                this.loadAllClass()
        },
        methods:{
            addStudent(){
                this.axios.post("http://localhost:8080/student/insert",this.studentForm).then(result=>{
                    if (result.data.code===200){

                        this.$message.success("添加成功") //弹出成功的消息框
                        this.dialogVisibles=false;
                        this.initTable() //重新加载表格
                    }
                })
            },
            //批量删除
            batchDelete(){
                this.ids=this.multipleSelection.map(item=>item.sid)
                console.log(this.ids)
                this.axios.post("http://localhost:8080/student/deleteList",this.ids).then(result=>{
                    if(result.data.code===200){
                        this.$message.success(result.data.msg);
                        //刷新页面
                        this.initTable();
                    }
                })
            },
            //获取表格被选中的项
            handleSelectionChange(val){
                this.multipleSelection=val;
            },
            //确认修改员工信息
            updateStudent(){
                this.axios.put("http://localhost:8080/student/update",this.studentForm).then(result=>{
                    if (result.data.code===200){
                        this.$message.success("修改成功") //弹出成功的消息框

                        this.dialogVisible=false;
                        this.initTable() //重新加载表格
                    }
                })
            },
            loadAllClass(){
                this.axios.get("http://localhost:8080/class/list").then(result=>{
                    this.classes=result.data.data
                    console.log(this.classes)
                })
            },
            initTable(){
                this.axios.post("http://localhost:8080/student/list/"+this.currentPage+"/"+this.pageSize,this.stuSearchForm).then(result=>{
                    this.tableData=result.data.data.records;
                    this.total=result.data.data.total
                })
            },
            //改变每页的条数时触发该方法
            handleSizeChange(val) {
                this.pageSize=val;
                this.initTable();
            },
            //改变当前页码时触发的方法
            handleCurrentChange(val) {
                this.currentPage=val;
                this.initTable();
            },
            //删除学生
            del(row){
                let sid = row.sid;
                this.axios.delete("http://localhost:8080/student/delete/"+sid).then(result=>{
                    if (result.data.code===200){
                        this.$message.success("删除成功") //弹出成功的消息框
                        this.initTable() //重新加载表格
                    }
                })
            },
            //修改
            Student(row){
                this.dialogVisible=true;
                this.studentForm=row;
            },
            Add(){
                this.dialogVisibles=true;
            }
        }
    }
</script>

<style scoped>

</style>